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Figure 3 | Radiation Oncology

Figure 3

From: The sensitivity of gamma-index method to the positioning errors of high-definition MLC in patient-specific VMAT QA for SBRT

Figure 3

Variation of dose volume histograms (DVH) due to the MLC misalignments. Dose volume histograms (DVH) of a lung stereotactic body radiation therapy (SBRT) plan (a) and a spine SBRT plan (b) are shown. The DVHs from the original plan and the plans with multi-leaf collimator (MLC) misalignments of Class Out, Class In and Class Shift are shown. At Class Out and Class In, MLC misalignments of 2 mm were introduced while 3 mm errors were introduced at Class Shift.

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